Home / 15,757.85-21,745.59-8,684.53

Finding the Fourth Proportional to 15,757.85, 21,745.59 and 8,684.53

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Solution

The fourth proportional to 15,757.85, 21,745.59 and 8,684.53 is: 11,984.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,757.85 : 21,745.59 = 8,684.53 : x
  2. Step 2: Convert to fraction form
    15,757.85/21,745.59 = 8,684.53/x
  3. Step 3: Cross multiply
    15,757.85x = 21,745.59 × 8,684.53
  4. Step 4: Simplify right side
    15,757.85x = 188,850,228.72
  5. Step 5: Solve for x
    x = 188,850,228.72/15,757.85
  6. Step 6: Final answer
    x = 11,984.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.